What is AI Code Detector?
AI Code Detector is an AI code detection tool that estimates whether a pasted code snippet was written by a human or generated by an AI assistant, aimed at teachers, interviewers, and code reviewers. You paste up to 20,000 characters and the tool returns a probability score from 0 to 100% plus a categorical verdict, flagging the output of major assistants like ChatGPT, Claude, Gemini, GitHub Copilot, and Cursor. It supports multiple languages including Python, Java, JavaScript, C++, and SQL, and bases its judgment on stylistic signals such as comment style, naming uniformity, and boilerplate patterns. The tool is deliberately honest about its limits: it states that no AI code detector is 100% accurate and recommends treating scores as indicators rather than proof, especially on short or heavily edited snippets. For anyone looking for the best AI for checking whether homework, take-home interview submissions, or pull requests contain AI-generated code, this is a lightweight starting point that needs no setup. On BestAIFor it fits teams that want a quick first read on code authorship without buying into a heavier plagiarism-detection suite.
What is AI Code Detector used for?
Checking whether code in homework, take-home interviews, or pull requests was written by a human or generated by an AI assistant.
How much does AI Code Detector cost?
Pros and cons
Pros
- Analyzes up to 20,000 characters per submission
- Returns a 0-100% probability score with a categorical verdict
- Detects output from ChatGPT, Claude, Gemini, GitHub Copilot, and Cursor
- Supports Python, Java, JavaScript, C++, SQL, and other languages
- Free to use with no account for up to 10 daily checks
Cons
- Explicitly not 100% accurate, especially on short or heavily edited snippets
- Limited to 10 daily checks without creating an account
- No API or bulk/CI integration shown for automated pull-request scanning
- Scores are probability indicators, not admissible proof of AI authorship
Questions about AI Code Detector
What is AI Code Detector used for?
AI Code Detector is used to estimate whether a code snippet was written by a human or generated by an AI assistant. People use it to screen homework, take-home interview submissions, and pull requests for AI-generated code, pasting up to 20,000 characters to get a 0-100% probability score.
Is AI Code Detector free?
Yes. AI Code Detector is free and allows up to 10 checks per day without creating an account. No paid tier is published on the site.
How accurate is AI Code Detector?
The tool explicitly states that no AI code detector is 100% accurate and recommends treating its score as a probability indicator rather than proof, particularly for short snippets or code that has been heavily edited after generation.
Which languages and AI assistants does it cover?
It supports multiple languages including Python, Java, JavaScript, C++, and SQL, and is tuned to flag output from major assistants such as ChatGPT, Claude, Gemini, GitHub Copilot, and Cursor.
What are the best alternatives to AI Code Detector?
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